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  1. OpenShift Virtualization
  2. CNV-25081

[2167244] Windows VM with Reenlightenment flag becomes non-migratable after upgrade CNV from 4.10 to 4.11

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    • Urgent
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      Description of problem:
      Windows VM was migratable in CNV 4.10.7, but after upgrade to 4.11.3 it becomes non-migratable, here the events from VMI:

      1. VM Created and successfully migrated for the first time:
        > Normal SuccessfulCreate 49m disruptionbudget-controller Created PodDisruptionBudget kubevirt-disruption-budget-56ncf
        > Normal SuccessfulCreate 49m virtualmachine-controller Created virtual machine pod virt-launcher-windows-vm-1675645478-4397972-dsmmn
        > Normal Created 48m virt-handler VirtualMachineInstance defined.
        > Normal Started 48m virt-handler VirtualMachineInstance started.
        > Normal SuccessfulCreate 14m disruptionbudget-controller Created Migration kubevirt-evacuation-7frcx
        > Normal SuccessfulUpdate 14m virtualmachine-controller Expanded PodDisruptionBudget kubevirt-disruption-budget-56ncf
        > Normal PreparingTarget 11m (x2 over 11m) virt-handler VirtualMachineInstance Migration Target Prepared.
        > Normal PreparingTarget 11m virt-handler Migration Target is listening at 10.131.0.119, on ports: 35055,36327
        > Normal Migrating 11m (x5 over 11m) virt-handler VirtualMachineInstance is migrating.
        > Normal Migrated 11m virt-handler The VirtualMachineInstance migrated to node cnv-qe-infra-07.cnvqe2.lab.eng.rdu2.redhat.com.
        > Normal Deleted 11m virt-handler Signaled Deletion
        > Normal SuccessfulUpdate 11m disruptionbudget-controller shrank PodDisruptionBudget%!(EXTRA string=kubevirt-disruption-budget-56ncf)
      1. When CNV upgraded - this message appeared:
        > Warning Migrated 5m32s virt-handler EvictionStrategy is set but vmi is not migratable; HyperV Reenlightenment VMIs cannot migrate when TSC Frequency is not exposed on the cluster: guest timers might be inconsistent
        > Warning Migrated 47s (x8 over 5m32s) virt-handler EvictionStrategy is set but vmi is not migratable; HyperV Reenlightenment VMIs cannot migrate when TSC Frequency is not exposed on the cluster: guest timers might be inconsistent

      And VM is not migratable anymore.

      Version-Release number of selected component (if applicable):
      CNV 4.11.3

      Steps to Reproduce:
      1. Install CNV 4.10.7
      2. Create Windows VM with HyperV Reenlightenment flag enabled
      3. Upgrade CNV to 4.11.3

      Actual results:
      VM is not migratable after upgrade

      Expected results:
      VM should be migratable

      Additional info:
      Restarting VM after upgrade (`virtctl restart`) helps fix that

              acardace@redhat.com Antonio Cardace
              dshchedr@redhat.com Denys Shchedrivyi
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                Created:
                Updated:
                Resolved: